The bar at Sinbad's Restaurant in San Francisco, Calif., Thursday March 5, 2015.

The bar at Sinbad's Restaurant in San Francisco, Calif., Thursday March 5, 2015.

Photo: The Chronicle

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The south side of at Sinbad's seen from the docks in San Francisco, Calif., on Wednesday, December 4, 2013.

The south side of at Sinbad's seen from the docks in San Francisco, Calif., on Wednesday, December 4, 2013.

Photo: Liz Hafalia / Chronicle

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Visitors enjoy drinks at the bar in Sinbad's Restaurant in San Francisco, Calif., Thursday March 5, 2015.

Visitors enjoy drinks at the bar in Sinbad's Restaurant in San Francisco, Calif., Thursday March 5, 2015.

Photo: The Chronicle

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Sign next to the Ferry Building in San Francisco, Calif., Thursday March 5, 2015.

Sign next to the Ferry Building in San Francisco, Calif., Thursday March 5, 2015.

Photo: The Chronicle

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A view of the outside seating area at Sinbad's in San Francisco, Calif., looking towards the bay bridge on Wednesday, November 27, 2013.

A view of the outside seating area at Sinbad's in San Francisco, Calif., looking towards the bay bridge on Wednesday, November 27, 2013.

Photo: Liz Hafalia

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A view of the bay bridge from the dining room at Sinbads in San Francisco, Calif., on Wednesday, December 4, 2013.

A view of the bay bridge from the dining room at Sinbads in San Francisco, Calif., on Wednesday, December 4, 2013.

Photo: Liz Hafalia / Chronicle

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Matt Cochran (right) has crab melts with his co-workers at Sinbad's in San Francisco, Calif., during lunch on Wednesday, December 4, 2013.

Matt Cochran (right) has crab melts with his co-workers at Sinbad's in San Francisco, Calif., during lunch on Wednesday, December 4, 2013.

Photo: Liz Hafalia / Chronicle

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Staff member Jose Cisneros catches up with sports during his break at Sinbad's in San Francisco, Calif., on Wednesday, December 4, 2013.

Staff member Jose Cisneros catches up with sports during his break at Sinbad's in San Francisco, Calif., on Wednesday, December 4, 2013.

Photo: Liz Hafalia / Chronicle

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Co-owner Thomas Stinson shows the statue of Sinbad enclosed in a glass case at the entrance of Sinbad's in San Francisco, Calif., on Wednesday, November 27, 2013. He owns the restaurant with his other brothers. less

Co-owner Thomas Stinson shows the statue of Sinbad enclosed in a glass case at the entrance of Sinbad's in San Francisco, Calif., on Wednesday, November 27, 2013. He owns the restaurant with his other ... more

Photo: Liz Hafalia / Chronicle

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A view of the dining area at Sinbad's in San Francisco, Calif., on Wednesday, November 27, 2013.

A view of the dining area at Sinbad's in San Francisco, Calif., on Wednesday, November 27, 2013.

Photo: Liz Hafalia / Chronicle

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Long time patron Al Dockus (right) has a gin with a squeeze of lemon while he talks with co-owner Chuck Stinson (left) at Sinbad's in San Francisco, Calif., on Wednesday, December 4, 2013.

Long time patron Al Dockus (right) has a gin with a squeeze of lemon while he talks with co-owner Chuck Stinson (left) at Sinbad's in San Francisco, Calif., on Wednesday, December 4, 2013.

Photo: Liz Hafalia / Chronicle

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Retired firemen Tom Macaluso (front left) and Jerry Mahoney (front right) from the San Francisco Retired Firemen and Widow's association meet with friends as they have their annual christmas lunch at Sinbad's in San Francisco, Calif., on Wednesday, December 4, 2013. Members said they have had their annual luncheon at Sinbad's for the last twenty years. Members mentioned that Sinbad's is the last union San Francisco restaurant not associated with a hotel. less

Retired firemen Tom Macaluso (front left) and Jerry Mahoney (front right) from the San Francisco Retired Firemen and Widow's association meet with friends as they have their annual christmas lunch at Sinbad's ... more

Photo: Liz Hafalia / Chronicle

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Sinbad's sign on Embarcadero in San Francisco, Calif., Thursday March 5, 2015.

Sinbad's sign on Embarcadero in San Francisco, Calif., Thursday March 5, 2015.

Photo: The Chronicle

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Interior of Sinbad's Restaurant in San Francisco, Calif., Thursday March 5, 2015.

Interior of Sinbad's Restaurant in San Francisco, Calif., Thursday March 5, 2015.

Photo: The Chronicle

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Gentlemen enjoying their lunch at Sinbad's Restaurant in San Francisco, Calif., Thursday March 5, 2015.

Gentlemen enjoying their lunch at Sinbad's Restaurant in San Francisco, Calif., Thursday March 5, 2015.

Photo: The Chronicle

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Interior of Sinbad's Restaurant in San Francisco, Calif., Thursday March 5, 2015.

Interior of Sinbad's Restaurant in San Francisco, Calif., Thursday March 5, 2015.

Photo: The Chronicle

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Tom Stinson, one of the owners on the phone in Sinbad's Restaurant in San Francisco, Calif., Thursday March 5, 2015.

Tom Stinson, one of the owners on the phone in Sinbad's Restaurant in San Francisco, Calif., Thursday March 5, 2015.

Photo: The Chronicle

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Bartender at Sinbad's Restaurant who only wants to be referred to as Mike restocks bar in San Francisco, Calif., Thursday March 5, 2015.

Bartender at Sinbad's Restaurant who only wants to be referred to as Mike restocks bar in San Francisco, Calif., Thursday March 5, 2015.

Waterfront old-timer Sinbad’s remains open on Pier 2, despite an agreement with its landlords, the Port of San Francisco, that it would vacate its longtime home last month.

Sinbad’s lease expired on March 21, but it has remained open as usual, trudging along in the shadow of the Ferry Building. As previously reported, the Port then proceeded to give Sinbad’s owners a 30-day notice demanding the return of the property.

That notice was given on March 23, meaning that the grace period has expired, and since Sinbad’s is still operational (and open today, in fact), the Port has officially filed an unlawful detainer lawsuit in Superior Court.

“We expected the owners of Sinbad’s to keep their word as they pledged repeatedly and honor the 2012 Settlement Agreement they signed for which they accepted money from the Port agreeing to vacate the premises by December 2014,” said Port Executive Director Monique Moyer said in a statement today. “The Port graciously allowed Sinbad’s a one-time extension to March 21, 2015 to find another location, ensure a safe transition for their employees and vacate the premises. However, Sinbad’s did not uphold their part of the Settlement Agreement and are willfully trespassing on Port property.”

So what does the unlawful detainer lawsuit mean for the future of Sinbad’s?

Sinbad’s owners — brothers Duane, Tom and Charles Stinson– will have five days to answer the Port’s complaint. After those five days, the Port “will immediately proceed to court to recover its property at Pier 2,” according to a joint statement from the Port and the city.

Duane Stinson had no comment on the matter, but Sinbad’s is open as usual today. When asked if there were any plans to close, Stinson simply responded, “Oh we’re not doing anything like that.”

Regardless, The clock continues to tick on Sinbad’s. Expect updates over the following five days.